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Characteristics and emission factors of PCDD/Fs in various industrial wastes in South Korea. | LitMetric
Since South Korea ratified Stockholm Convention in January 2007, there is an obligation to survey the national emission of PCDD/Fs through environmental routes other than the air for taking actions to reduce and/or eliminate the release of PCDD/Fs. In this study, PCDD/F-containing wastes from various industrial emission sources in Korea (n=388) except from incinerators were investigated to elucidate the emission characteristics and their emission factors of PCDD/Fs in each industry. The concentrations of PCDD/Fs in waste samples ranged ND-96,200 ng I-TEQ kg(-1) (or 66,600 ng WHO-TEQ kg(-1)) for solid phase samples and ND-11,100 pg I-TEQL(-1) (or 6800 ng WHO-TEQ L) for liquid samples, respectively. Elevated levels of PCDD/F concentrations and emission factors were found in the wastes from productions of Cu, Al, Zn, Iron/steel, Pb, EDC/VCM/PVC and from waste landfill sites. The wastes from productions of cement (kilns) and acetylene (carbide method) showed elevated levels of PCDD/F emission factors only. The dominant congeners were OCDD, OCDF, 1,2,3,4,6,7,8-HpCDF and 1,2,3,4,5,7,8-HpCDD. The PCDF ratios in samples from thermal processes and solid phase samples were 69% and 70%, respectively. The ratio of OCDD congener (about 23.5%) was higher than that of other congeners in both solid and liquid phase wastes. These results can be used as a useful reference for the establishment of the PCDD/F inventory and their management plans.
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